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see explanation

Step-by-step explanation:

Given

7x + 4y + 1

This expression consists of 3 separate terms, that is

7x, 4y and 1

D. 7x, 4y, and 1

Step-by-step explanation:

An algebraic expression consists of a group of terms separated by operators, which are either plus signs or minus signs. A term is either a number by itself, which is called a constant, a variable by itself or a number multiplied by a variable. ... An expression differs from an equation because an expression is a group of terms without an equal sign. Identifying the terms of an expression is the first step to simplifying the expression.